Abstract: A rotatable and retractable beauty instrument based on signal synchronization includes a main body. A back cover and a positioning head cover are respectively provided at rear and front sides of the main body. A synchronous rotating disk, a rise-fall retractable body and an active rubber body are sequentially arranged between the main body and the positioning head cover. A control main board is arranged between the main body and the back cover, and a direct-current speed-reducing motor is arranged on the control main board. A synchronous transmission circuit board is arranged on one surface of the synchronous rotating disk, and the rise-fall retractable body and multiple springs are arranged at a top of the other surface of the synchronous rotating disk. Based on the combination of the rise-fall retractable body and the synchronous rotating disk, the automatic extension and retraction is achieved.

Abstract: A filament lamp includes a plastic housing, a transfer switch, and a laterally rotary structure. The transfer switch is disposed in the plastic housing, an outer wall of the plastic housing is provided with an opening, the laterally rotary structure is rotatably disposed on the outer wall of the plastic housing, an inner side, close to the plastic housing, of the laterally rotary structure extends to form a drive connecting structure, and the drive connecting structure passes through the opening to be connected with the transfer switch in a transmission way. With the design of the laterally rotary structure, when gears are adjusted by a user, the transfer switch is operated by the drive connecting structure only by rotating the laterally rotary structure on the outer wall of the plastic housing, so as to switch the gears.

Abstract: A rotatable and retractable beauty instrument based on signal synchronization includes a main body. A back cover and a positioning head cover are respectively provided at rear and front sides of the main body. A synchronous rotating disk, a rise-fall retractable body and an active rubber body are sequentially arranged between the main body and the positioning head cover. A control main board is arranged between the main body and the back cover, and a direct-current speed-reducing motor is arranged on the control main board. A synchronous transmission circuit board is arranged on one surface of the synchronous rotating disk, and the rise-fall retractable body and multiple springs are arranged at a top of the other surface of the synchronous rotating disk. Based on the combination of the rise-fall retractable body and the synchronous rotating disk, the automatic extension and retraction is achieved.